Gas-burning stove.



C. A. HARTIVIANN.

GAS BURNING STOVE.

APPLICATION FILED NOV. 2. 19m.

Patented. Jan. 16,1917.

2 SHEETS-SHEET I.

M H mm m M, M w 6 WI T/VESSES:

A TTOR/VEYS C; A. HARTIVIANN.

GAS BURNHJG STOVE.

APPLICATION FILEDNOV. 2,1915.

1,2 1 %,9%. Patented Jan. 16,1917.

2 SHEETS-SHEET 2.

lllil Emil CHARLES A. HABTMANN, OF WASHINGTON, DISTRICT OF COLUMBIA.

GAS-BURNING s'rovn.

Application filed November 2, 1915.

To all whom it may concern Be it known that I, GnARLEs A. HART- MANN, a citizen of the United States, and a resident of Washington, in the District of Columbia, have invented a new and useful Improvement in Gas-Burning Stoves, of which the following is a specification.

My invention relates to improvements in gas burning stoves, and it consists in the combinations, constructions and arrange ments herein described and claimed.

An object of my invention is to provide a device by means of which the gas may be automatically turned on or cut ofi' when a vessel is placed on a burner or is taken off of it.

A further object of my invention is to provide a device of the type described which is simple in construction, and is therefore cheap to manufacture.

A further object of my invention is to provide a device which may be applied to an ordinary gas stove without the necessity of dismantling the latter.

A further object of my invention is to provide a device having a balanced member which may be forced downwardly by the engagement of the vessel so as to turn on the gas, and which, being balanced, will return to its normal position when the vessel is removed, thereby shutting off the gas.

A further object of my invention is to provide means for lighting gas burners without the necessity of employing matches. To this end I make use of a pilot flame which burns very little gas, but which is in position to ignite the gas from the main burner when the latter is turned on.

Other objects and advantages will appear in the following specification, and the novel features of the invention will be particularly pointed out in the appended claims.

My invention isillustrated in the accompanying drawings, forming part of this application, and in which Figure 1 is a plan view of the device, Fig. 2 is a section on the line 2-2 of Fig. 1, Fig. 3 is a detail sectional view, showing the central cap in a shifted position, Fig. his a section on the line 44 of Fig. 1, Fig. 5 is a detail section through a portion of the Specification of Letters Patent.

Patented J an. 115, 191?.

Serial No. 59,203.

connectingpipe, Fig.6 is a perspective view of the lever arm, and Fig. 7 is a sectional View of a modified form of the device.

In carrying out my invention I make use of any ordinary gas stove. In Fig. 1 I have shown a plate 1, which is provided with a burner grid 2, a similar grid is designed to cover the opening above the burner at the right hand side of the figure, if desired. The main supply pipe 3 is designed to supply the gas for the burners. At C, I have shown cocks of a novel form, which are designed to cooperate with pipes, hereinafter described, for automatically turning on and off the gas.

Referring now to Figs. 2 and 4, it will be seen that the cock 0 comprises a body 4: having a main passage way 5, shown in dotted lines, controlled by two valves. One of these valves is shown at 6 and the other at 7. The valve 7 is a rotary valve of the ordinary type and is provided with a handle 8, by means of which it may be manually manipulated. An arm 9 extends from the valve 6, as shown in the drawing. The body portion 4 of the cock has an extension 4* provided with a bore 10 shown in dotted lines. It will be noted that this bore communicates with the main bore 5 between the pipe 3 and the stop cock 7. The bore 10 iscontrolled by a valve 12, so that the gas flow is regulated. Communicating with the bore 10 is a pipe 13 whichextends forwardly and then upwardly. At 14, Fig. 5, is an air intake section; a tip 15 is secured to the latter. This forms a pilot light and the provision of the air intake 14L insures a blue non-luminous flame.

As will be seen from Figs. 2 and 4, there is a downwardly extending plate 1 at the front of the plate 1, which is provided with an opening 1 the bodyportion of the burner 16 is secured to an auxiliary plate 16-. The opening 1 forms a socketfor receiving the enlarged end portion 17 of the burner casting. As will be seen from the drawing, this burner casting has a conduit 18 which leads from the head 17 to a chamber 19, which is divided up into radiating sections, each provided with outlets 20; It will be observed, however, that there is a central opening 21 through the burner casting, through which a post 22 is designed to extend. This post 22 is secured to a lever arm 23. The lever 23 is fulcrumed at 24-. To this end 1 have provided a supporting cross bar 25 which is provided with an opening to admit the lever 23, retaining members such as cotter pins 26 being provided to keep the lever in position. A Weight 27 is provided with a set screw 28 and may be adjusted along the lever 23. The post 22 is provided with a pin 22 near its top. A cap 29 is provided with a bore arranged to fit over the reduced end portion of the post 22. The cap is provided with a pair of notches 29 arranged to receive the pin 22 when the cap is turned into the position shown in Fig. 3. The cap may be raised and turned into the position shown in Figs. 2 and 4:, and the pins 22 will maintain it in its raised position. In the drawings 1 have shown only one of these notches 29 and pins 22*, but it will be understood that on the opposite side of the post there is a similar pin and that the cap 29 is provided with a notch 29, not shown.

Referring now particularly to Fig. 2 it will be seen that the arm 9 of the valve 6 is connected by a link 30 with a bell-cranklever 31 which is pivoted at 32 to a portion of the plate, 1, and whose shorter arm 33 is connected with the upturned end of the lever 23. In order to prevent any accidental displacement I slot the arm 33 as shown at 33 and also the lever 23 at 23*, see Fig. 6, so that the parts may-fit together. They are retained in position by a pivoted member 3-1 carried by the arm 23, see Fig. 6, which is frictionally held in position.

From the foregoing description of the various parts of the device, the operation thereof may be readily understood. Normally the lever 23 and the post 22 are in the position shown in Fig. 2, being held in this position by means of the weight 27; the cap 29, it will be observed, is slightly above the supporting grid 2. In this position, the arm 9 of the valve 6 is inclined forwardly, thereby turning the valve to shut off the flow of gas. The pilot light 15 is, of course, burning, and this flame may be regulated by the valve 12, see Fig. 2.

When new a vessel, such as that shown at 36 in Fig. 4:, is placed on the grid it will engage the cap 29 forcing the latter downwardly and will thus move the lever so as to bring the arm 9, through the medium of the link and lever 30 and 31, in the position shown in Fig. 4:, thereby turning on the gas, which the pilot light will ignite. As long as the Vessel 36 is in this position, the gas is on and the flame will continue, but when the vessel is removed, then the counterweight 27 will operate the arm 9 so as to cause the turning off of the gas. There is, therefore, no danger of the gas being wasted by failure to turn it off.

It is obvious that the device may be applied to an ordinarv gas stove with very little change in the latter. The burners of ordinary gas stoves are removable, and when the cock G is substituted for the ordinarv cock and the burner for the ordinary burner, the remaining parts may be readily placed in position. It is, of course, necessary to secure to the stove a support 25 for the lever 23, but as stated before, this does not require material change in existing gas stoves. The flow of gas to the main burner may be regulated by the handle 8 in the ordinary manner, while, as stated before, the pilot flame may be regulated by the valve 12.

In Fig. 7 1 have shown a modification in which the burner C is provided with a main valve controlled by a valve handle 8. A passage 10 is controlled by the valve 12 and a pipe 13 leads to the pilot tip 15, the air intake 14L als being provided. In this form of the device the pilot 15' is designed to be lighted and kept burning, so that all that is necessary is to turn on the main valve 6 by means of the handle 8, when the burner may be lighted. It obviates the use of matches and the consequent danger of fires, owing to the throwing of lighted matches in waste baskets, etc.

I claim 1. In a gas stove, a burner having a central opening, a lever disposed beneath said burner, the ends of the lever projecting beyond the burner, a post carried by said lever near the central part thereof, said post being arranged to extend through said central opening, a stop cock disposed at the front of the stove for controlling the flow of gas to the burner, connections between one end of said lever and said stop cock for operating the latter on the movement of the post, an adjustable counterweight carried by the opposite end of the lever at the rear of the stove for normally retaining the post in a raised position, a fulcrum bar for said lever disposed between said adjustable weight and said post, means carried by the lever for preventing longitudinal movement thereof with respect to said fulcrum bar, and a cap resting loosely on said post and adjustable with respect thereto to different positions to change the effective length of the post.

2. In a gas stove cover, a plurality of burners, each burner having a central opening, a lever disposed beneath each burner, the ends of the lever projecting beyond the burner, a post carried by each lever near the central part thereof, said posts being arranged to extend through the openings of their respective burners, a stop cock for each burner disposed at the front of the stove for controlling the flow of gas to the burner, connections between one end of each thereof through the openings and an adof said levers and its individual stop cock justable counterweight carried by each lever 5 for operating the latter on the movement of on the opposite side of the fulcrum bar the post, a fulcrum bar common to each of from the post. said levers, the ends of said fulcrum bar being provided with openings arranged to CHARLES A. HARTMANN.

receive said levers, means carried by the levers for preventlng longltudinal movement 10 Monica of this patent may be obtained for five cents each, by addressing the Comminsioner of JPntentn,

Washington, ID. G." 

